Why ethanol free? Because over time fuel begins to evaporate gummy deposits and hard varnish can build up on spark plugs and carburetor parts. This could prevent the engine from starting or running smoothly.
Ethanol Free Fuel is used in all new and repaired equipment serviced by Buckeye Power Sales.
https://www.stihlusa.com/products/technology/stihl-motomix/
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